Patents by Inventor Graham R. Rideal

Graham R. Rideal has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4608303
    Abstract: Vermiculite ore is contacted with an aqueous solution with at least one salt of sodium, lithium or an organosubstituted ammonium cation followed by aqueous washing so that the ore swells. The swollen vermiculite in aqueous suspension is subjected to a shearing action until a suspension containing vermiculite particles having dimensions less than 50 microns is produced with elimination from the suspension of all particles having a diameter larger than 50 microns. Water can then be removed from the suspension.
    Type: Grant
    Filed: June 9, 1982
    Date of Patent: August 26, 1986
    Assignee: Imperial Chemical Industries PLC
    Inventors: Denis G. H. Ballard, Colin S. Cundy, Graham R. Rideal, David C. W. Morley
  • Patent number: 4543287
    Abstract: A fibrous composite material of essentially two-dimensional form in the form of individual fibres, sheets or layers comprising combustible fibres and lamellae of a layer mineral of size below 50 microns, a method for the manufacture of the fibrous composite materials by applying lamellae of a layer mineral to the fibres preferably from suspension followed by removal of the liquid phase of the suspension, and use of the fibrous composite materials for the fire-protection of substrates.
    Type: Grant
    Filed: January 17, 1984
    Date of Patent: September 24, 1985
    Assignee: Imperial Chemical Industries Limited
    Inventors: Peter J. Briggs, Kevin McAloon, Graham R. Rideal
  • Patent number: 4476181
    Abstract: An aluminum substrate comprising a layer of lamellae of a layer mineral, preferably vermiculite, in which substantially all of the lamellae are of size below 50 microns, production of the coating by applying a suspension of the lamellae to the substrate and removing the liquid from the suspension. The coating significantly upgrades the thermal insulation and fire performance of aluminum substrates even when only a few microns, for example below 50 microns and even below 10 microns, in thickness.
    Type: Grant
    Filed: March 28, 1983
    Date of Patent: October 9, 1984
    Assignee: Imperial Chemical Industries Limited
    Inventors: Peter J. Briggs, Kevin McAloon, Graham R. Rideal
  • Patent number: 4442164
    Abstract: A fibrous composite material of essentially two-dimensional form in the form of individual fibres, sheets or layers comprising combustible fibres and lamellae of a layer mineral of size below 50 microns, a method for the manufacture of the fibrous composite materials by applying lamellae of a layer mineral to the fibres preferably from suspension followed by removal of the liquid phase of the suspension, and use of the fibrous composite materials for the fire-protection of substrates.
    Type: Grant
    Filed: October 24, 1983
    Date of Patent: April 10, 1984
    Assignee: Imperial Chemical Industries Ltd.
    Inventors: Peter J. Briggs, Kevin McAloon, Graham R. Rideal
  • Patent number: 4324838
    Abstract: A free-flowing, dry powder composition comprising vermiculite lamellae (delaminated vermiculite); preferably the composition contains a solid particulate additive such as magnesium oxide.
    Type: Grant
    Filed: August 14, 1979
    Date of Patent: April 13, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventors: Denis G. Ballard, Richard M. Charnah, John F. Droughton, Graham R. Rideal
  • Patent number: 4269628
    Abstract: A composition comprising vermiculite lamellae (delaminated vermiculite) and one or more solid particulate materials which have a basic reaction in water, especially magnesium oxide. These particulate additives improve the physical properties of vermiculite articles especially the compressive strength and stability to water of foam.
    Type: Grant
    Filed: August 13, 1979
    Date of Patent: May 26, 1981
    Assignee: Imperial Chemical Industries Limited
    Inventors: Denis G. H. Ballard, William N. E. Meredith, Graham R. Rideal
  • Patent number: 4130687
    Abstract: A rigid cellular foam of Vermiculite lamellae made by drying the frothy mass formed when an aqueous suspension is gasified.
    Type: Grant
    Filed: April 14, 1977
    Date of Patent: December 19, 1978
    Assignee: Imperial Chemical Industries Limited
    Inventors: Denis G. H. Ballard, Colin S. Cundy, Graham R. Rideal